About the Thermodynamic and Kinetic Fundamentals of the Self-Decomposition of Tetrafluoroethylene – Part II: Formal Explosion Kinetics

✍ Scribed by R. Epsch; G. Goldmann; A. Killich; G. Löhr; H.-J. Staudt

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 113 KB
• Volume: 25
• Category: Article
• ISSN: 0930-7516
• DOI: 10.1002/1521-4125(200204)25:4<393::aid-ceat393>3.0.co;2-p

✦ Synopsis

Equations are established for the pressure increase as a function of time for the self-decomposition of tetrafluoroethylene (TFE) for both a uniform tube and a sphere. The resting gas is locally ignited at one end of the tube and in the center of the sphere respectively. Buoyancy is ignored. Due to the low k-value, major simplifications are justifiably introduced. Apart from the geometrical factors, the pressure increase as a function of time is solely controlled by the pressure increase ratio, Õ, and the intrinsic flame speed, v o , thus the equations also are applicable to other gaseous TFE-mixtures of technical interest. The average flame speed is 0.1±0.3 m/s, which compares well with other explosive gaseous mixtures, and v o lies in the range of the molecular diffusion rate. The self-decomposition of TFE does not seem to exhibit any specific patterns.